text: /* ========================================================================= *
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   *                               OpenMesh                                    *
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   *           Department of Computer Graphics and Multimedia                  *
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   * ========================================================================= */
  
  /*===========================================================================*\
   *                                                                           *
   *   $Revision$                                                         *
   *   $Date$                   *
   *                                                                           *
  \*===========================================================================*/
  
  
  //=============================================================================
  //
  //  Implements an reader module for STL files
  //
  //=============================================================================
  
  
  #ifndef __STLREADER_HH__
  #define __STLREADER_HH__
  
  
  //=== INCLUDES ================================================================
  
  
  #include <stdio.h>
  #include <string>
  
  #include <OpenMesh/Core/System/config.h>
  #include <OpenMesh/Core/Utils/SingletonT.hh>
  #include <OpenMesh/Core/IO/reader/BaseReader.hh>
  
  
  //== NAMESPACES ===============================================================
  
  
  namespace OpenMesh {
  namespace IO {
  
  //== FORWARDS =================================================================
  
  class BaseImporter;
  
  //== IMPLEMENTATION ===========================================================
  
  
  /**
      Implementation of the STL format reader. This class is singleton'ed by
      SingletonT to STLReader.
  */
  class OPENMESHDLLEXPORT _STLReader_ : public BaseReader
  {
  public:
  
    // constructor
    _STLReader_();
  
    /// Destructor
    virtual ~_STLReader_() {};
  
  
    std::string get_description() const
    { return "Stereolithography Interface Format"; }
    std::string get_extensions() const { return "stl stla stlb"; }
  
    bool read(const std::string& _filename,
  	    BaseImporter& _bi,
              Options& _opt);
  
    bool read(std::istream& _in,
  		    BaseImporter& _bi,
              Options& _opt);
  
    /** Set the threshold to be used for considering two point to be equal.
        Can be used to merge small gaps */
    void set_epsilon(float _eps) { eps_=_eps; }
  
    /// Returns the threshold to be used for considering two point to be equal.
    float epsilon() const { return eps_; }
  
  
  
  private:
  
    enum STL_Type { STLA, STLB, NONE };
    STL_Type check_stl_type(const std::string& _filename) const;
  
    bool read_stla(const std::string& _filename, BaseImporter& _bi, Options& _opt) const;
    bool read_stla(std::istream& _in, BaseImporter& _bi, Options& _opt) const;
    bool read_stlb(const std::string& _filename, BaseImporter& _bi, Options& _opt) const;
    bool read_stlb(std::istream& _in, BaseImporter& _bi, Options& _opt) const;
  
  
  private:
  
    float eps_;
  };
  
  
  //== TYPE DEFINITION ==========================================================
  
  
  /// Declare the single entity of the STL reader
  extern _STLReader_  __STLReaderInstance;
  OPENMESHDLLEXPORT _STLReader_&  STLReader();
  
  
  //=============================================================================
  } // namespace IO
  } // namespace OpenMesh
  //=============================================================================
  #endif
  //=============================================================================
  